NMR study of one-dimensional ionic conductors with hollandite-type structure
作者： Y ONODA , M WATANABE , Y FUJIKI , S YOSHIKADO , T OHACHI
DOI: 10.1016/0167-2738(81)90108-9
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摘要: The motion of K+ ion in the one-dimensional ionic conductor, Al-priderite, with hollandite-type structure was investigated using 27Al framework as a probe. temperature dependence spin-lattice relaxation time T1 showed that it is divided into two regions. In low region where dominated by intrinsic barrier, frequency proportional to ω1.5. slope, δln(T1)/δ(1/T), side gives small value 29 meV. high region, influenced long range fluctuation over impurity barriers, becomes independent frequency, and this behavior may be due existence reflecting walls introduced impurities barrier height which can not pass over.
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